Provide pkg-config file

This allows other packages to check for the presence, version, and
installation directory of xkeyboard-config during configure.

.gitignore

@@ -25,6 +25,7 @@ config.h
 config.h.in
 stamp-h1
 xkeyboard-config*.tar.*
+xkeyboard-config.pc
 xkeyboard-config.spec
 xkeyboard-config.prj
 xkeyboard-config.pws

Makefile.am

@@ -2,8 +2,12 @@ AUTOMAKE_OPTIONS = foreign
 
 SUBDIRS = compat geometry keycodes keymap po rules semantics symbols types docs
 
+pkgconfigdir = $(datadir)/pkgconfig
+pkgconfig_DATA = xkeyboard-config.pc
+
 EXTRA_DIST=config.rpath COPYING CREDITS README \
        autogen.sh \
+       xkeyboard-config.pc.in \
        xkeyboard-config.spec \
        xkeyboard-config.spec.in \
        intltool-extract.in intltool-merge.in intltool-update.in

configure.in

@@ -13,7 +13,7 @@ fi
 AC_ARG_WITH( xkb_base,
              [AS_HELP_STRING([--with-xkb-base=DIR],[XKB base path @<:@DATADIR/X11/xkb@:>@])],
              xkb_base="$withval", 
-             xkb_base="\$(datadir)/X11/xkb" )
+             xkb_base="${datadir}/X11/xkb" )
 
 AC_ARG_WITH( xkb_rules_symlink,
              [  --with-xkb-rules-symlink=NAME1(,NAME2)*        create symlink(s) to "old style" rules files (xfree86 and/or xorg)],
@@ -75,6 +75,7 @@ symbols/sun_vndr/Makefile
 symbols/xfree68_vndr/Makefile
 symbols/extras/Makefile
 types/Makefile
+xkeyboard-config.pc
 xkeyboard-config.spec
 docs/Makefile
 ])

xkeyboard-config.pc.in

@@ -0,0 +1,8 @@
+prefix=@prefix@
+datarootdir=@datarootdir@
+datadir=@datadir@
+xkb_base=@xkb_base@
+
+Name: XKeyboardConfig
+Description: X Keyboard configuration data
+Version: @VERSION@